i began taking Tamsulosin HCL 0.4 mg Cap about 2-3 weeks ago from VA Hospital primary, previously taking Doxsasin. problem with frequent urination at night, not usually during day. i have in the past 3-4 days suffered from what i think is the common cold, i.e. runny nose, sore throat. my throat at night seems to be somewhat closing up and getting sorer. i take 1 capsule at night prior to bedtime. am taking numerous drugs, 72 years old and have sleep apnea but am unable to use CPAP due to deviated septum. i am Vietnam vet with interrupted sleep and PTSD, any thing to worry about with this new medicine?