Need some help

I don't want to get myself excited over nothing . However , for about 4-5 days my boobs feel larger. I keep getting these little dizzy spells and I have a lot of extra cm. I get so nauseous when I lay down and recently heartburn has increased with anything .. Even drinking water. My stomach makes me feel like I have to do a #2 but when I get there it's nothing .. Could it be early pregnancy cramps ? Kind of like light period cramps. And my back is killing me. I suffered a miscarriage in February and I'm too scared to take a test early just in case I'm not or it's a "too early" negative and it breaks my heart all over again. Does it sound like I could be pregnant ? Or do you think my body is being weird and messing with me?

I don't want to build myself up if I'm the only one that thinks so.