Okay let's work this out. Before we can fix your problem, we need to fix some other potential problems you may have and learn some info about you setup.
How long has the tank been running? 5 days
Did you cycle it properly? I set it up correctly, I had to move my other fish cause my old tank had snails in it that came with some plants. I wanted the plants I did not want the snails, they killed my beta.
What is the size of the tank? 10 gal
what are the parameters of your water? Fine according to my dip stick test strip.
Once you've answered these questions and provided us pictures so we can determine the gender of your fish we hopefully can help you out
Never mind, I went the to my local petco and talked to the fish expert there ( she raises betas, mollies, and three other types of fish) she said I could have an all male tank and it would be fine. So I took the pregnant Mollie back to Walmart and exchanged it for a male swordtail Mollie instead. And yes I know how to gender my fish thank you.