Possibly pregnant

So 3 months ago my period went from heavy bleeding to very light bleeding. From lasting 5-7 days to lasting 3 days max. My abdomen always feels bloated. I’m gaining weight and my breasts are bigger, I actually had to buy new shorts and bras. I took a home pregnancy test in March and one today and both have been negative.

My question is, can you have a light period and still be pregnant?

I have contacted my doctor and I go for blood work in the morning, I’m just worried it’s something like a cryptic pregnancy.’has anyone ever heard of bleeding lightly and being pregnant, but with negative tests.