My last period was on 3/11 i took a pregnancy test on 4/17 and was positive today 4/18 i spotted and 3hrs later i bleed with blood clots..this normal?

Not normal: There are three possibilities. First, you have a normal pregnancy. This could simply be implantation bleeding, although it sounds a bit heavy. Second, you could be having a miscarriage. Third, but less likely, this could be a pregnancy in your tube. You need to get checked soon to see which it is. This will involve scans and HCG blood tests.