spotty,
My $.02:
1) Paresthesias (tingling/numbness in extremities) are definitely caused by beta blockade.
2) Yep, beta blockers relax the stomach's sphincter and can contribute to GERD
3) If you are a male beta blockers cause erectile difficulty more often than not (females have fewer erection problems

)
4) I found weight gain a real problem with propranolol.
It seems you need it only for the maybe-migraines; I doubt you have hypertension.
For migraines, the dose is probably too high anyway.
You will need to wean yourself from this drug over several weeks and watch your herart-rate or BP doesn't soar.
If the migraines recur regularly you might want to take maybe 1/4 pill a day (20 mg. time release.) If not, then kiss them goodbye.