How far along am I?

Hey guys, I’m trying to work out how far along I will be in my pregnancy and they say to work it out by the first day of your last period and mine was the 1st of may so does that mean I’m 5 weeks because I don’t feel like I’m that far along? Also For those who say ring my doctors I’m trying to hold off ring the doctors for a few more weeks as I was pregnant in January but lost it at 7 weeks and everything was okay up until I had an internal scan and it might just be me being paranoid but I’d rather just leave it for now and see how it goes first I’m taking all my vitamins just don’t want to risk anything this time.

Thanks in advance x