Need answers!

Alyssia

I had a chemical pregnancy that ended at 4weeks. On the 15th my hcg level was at 0 and all my symptoms went away later that night. It's been 12 days since then and my same symptoms have returned, the nausea isn't as intense as before but it's all back. Mild cramping, sore breasts and slight headache, bloating etc. Is it normal for symptoms to come back?? I'm TTC as soon as possible when it's possible.