Adderall abuse help and advice

[AmIaPsycho?]

Back in June of this year, I was prescribed Adderall, and, like an idiot, I began abusing it. I started with 10mg my first month, and then I was upped to 20mg the next. That's where it really started to get bad. I would be taking at least 6-7 pills(120-140mg) a day, throughout the day,dthen I ran out a week before my next refill. When I got my refill, I tried to lower my intake, but my tolerance had increased, so within 3 or 4 days, I was back to my normal routine, and ran out early again. But instead of realizing my dumbass mistake, I made another one by asking my doctor to up me to 30mg. I was taking 5(150mg) a day, with my tolerance building to the point where I would take two(60mg) and would'nt feel a thing. When I ran out of those, it was about a week and half and I got this months refill. That was last week Monday. Between then and this past Monday, 7 days, I took at least 30(300mg). It wasn't until then did I realize how bad I f@cked up. While I didn't stop taking them, I definitely haven't taken nearly amount I usually do, but I fear the damage is already been done to my heart, cardiovascular system, and even my brain. I've looked up all the problems that adderall can cause, but most of the information I've doesn't exactly specify a situation like mine, so I figured I'd try a forum, and see if someone could help. So, exactly how bad have I messed up my circulatory and cardiovascular system, and where should I go from here to help my situation. To help you help me, I'm going to give the exact information about my abuse and other information that may contribute to any problems I may or may not have:

I've been on Adderall for 4 months

The maximum I have taken during a normal day would be 180mg.

I take them orally, I do not snort them. I do sometimes chew them, if that matters.

This past week (Monday to today, Friday) I've taken a total of 100mg.

I smoke menthol cigarettes (Newports or Marlboro Blacks, if brand matters), and I smoke a pack to a pack and a half a day.

I weigh 220 pounds and am 19 years old.

I've abused drugs in the past, mostly downers(xanax, painkillers)

I smoke marijuana regularly

I also take currently take Seroquel, 300mg, every night

Thank you for your help, especially if it might save my life. Though I have not stopped taking Adderall comepletely, I'm definitely not taking the high amounts I'm used to talking in a day (no more than 3). I also plan in taking any this weekend, as I'm leaving my home town and am going to leave my pills at home. Please do not be judgemental, I've already kicked myself in the ass enough for my stupidity