Ttc and very overweight

Alright..

I’m 20. My boyfriend is 28. We’ve never used protection or even pulled out. I’ve always secretly wanted to get pregnant but all that was ever said on the subject (before this month) was “if it happens it happens” but last month I took a pregnancy test and came out negative but (we don’t know how long after) it was positive. So the next day I went to urgent care to take a test and it was negative but the next day I got my period SO bad worse than it’s ever been before and I talked to my mom and she thinks I may have miscarried. So I talked to my boyfriend and we have both decided that we will be actively trying this month 😃! But I am very overweight.. by actively trying I mean we’re both taking the couples pregnancy pack pills by one a day, I’ve quit smoking, we’re eating healthy, and I’m tracking my periods/ ovulation with this app. Does anyone have any advice?

BABY DUST TO EVERYONE!