I only get my period under 8 hours could this cause gain

I only get my period under 8 hours. I think this may be a big part of why I am gaining the weight; I may be retaining too much water I believe.

I am on a long list of medication: Too many I think

• 1. Imitrex 100mg for chronic Migraines
• 2. Amitriptyline 75mg for chronic Migraines
• 3. Metoprol 50mg half twice a day for chronic Migraines
• 4. Wellbutrin 150mg twice a day for depression
• 5. Ranitidine 150mg twice a day for my stomach
• 6. Rabeprazole 20mg twice a day for my stomach and
• 7. Portia 28 Birth control

I also have Asthma and take two puffers

• 1. Salbutamol 100UG
• 2. Symbicort 200/6 Turb

I also have Neurofibromatosis and High Protein. My mom has a thyroid problem and high iron she too has Neurofibromatosis. Heart problems run in the family on my dad's side my Grandpa and Uncle died of a heart problem